"As temperatures drop and central heating systems blast, the humidity in the air plummets," explains New-York-based dermatologist Dr. Hadley King of winter's drying effects on skin. "The result is increased trans-epidermal water loss: these dry conditions suck moisture out of the skin. This leaves skin feeling dry, tight, itchy, dull and ashy." But getting skin as soft as Kim Kardashian's requires a simple shift in your beauty routine. "Apply [moisturizer] immediately after a bath or shower to lock in the moisture." Dr. King suggests budget-friendly Nelsons Pure & Clear Nourishing Moisturizer for the face and Aquaphor Healing Ointment for the body.